Functions/Operation Via Profibus Pa; System Integration; Acyclic Data Transmission; Simatic Pdm - Siemens PROFIBUS PA SIPART PS2 Manual

Functions/Operation
via PROFIBUS PA
5.1

System integration

5.2

Acyclic Data Transmission

5.2.1 SIMATIC PDM

SIPART PS2 PA Manual
A5E00127926-03
The positioner can be controlled and monitored by acyclic and cyclic
data transmission by a control system (master). So that the positioner
can be in communication as slave with the master, its address must be
set up in advance.
The PROFIBUS address is factory set to 126. This can be changed at
the device (chapter 4.4 page 88) or with a parameter tool such as the
SIMATIC PDM or by HW configuration over the bus.
Acyclic data transmission is mainly used for transmitting parameters
during commissioning, maintenance, batch processes, or for displaying
further variables which do not take part in cyclic user data traffic.
Data traffic occurs between a class-2 Master and the field device with
so-called C2 connections. So that several class-2 Masters can simulta-
neously access the same positioner, the device supports up to four C2
connections. However, you must ensure that they are not writing to the
same data.
Acyclic data transmission is best performed with the SIMATIC PDM
software package.
SIMATIC PDM is a software package for designing, parameterizing,
commissioning, diagnosing and maintaining the positioner and other
process devices.
SIMATIC PDM contains a simple process monitoring of the process
values, alarms and status signals of the device.
Care and Maintenance
5
119